Questions regarding password-based authentication and password management
2
votes
1answer
355 views
root password changed automatically
I have my system on dual boot (win7 and RHEL 6).
I have 2 user account on RHEL 6. A normal user and a root user. I put passwords of both accounts same. It was working fine from 5 6 days. Yesterday I ...
2
votes
1answer
107 views
How to password-less log on via ssh alias
Suppose I have access to pc via a server. I can directly log-on to pc by using How do I connect to a pc through another pc using ssh
Such that my .ssh/config looks like:
Host short
Hostname pc
User ...
2
votes
1answer
564 views
How to enter/choose session after logout without password in (Linux Mint) Xfce?
I have Linux Mint 14 Xfce (4.10) and have also installed LXDE desktop, so I can choose between these sessions if I want. Normally I would set one as default and at startup I am not asked for ...
2
votes
1answer
131 views
I try to add passwords to the “pass” password manager. But my attempts fail with “no public key” GPG errors. Why?
I am trying to install Pass: the standard Unix password manager, however, when I try to add passwords to the appliation I get these errors
gpg: Kelly's Passwords: skipped: No public key
gpg: [stdin]: ...
2
votes
1answer
113 views
Security drawbacks of disabling tty password check
I found that, in /etc/inittab, this modification (-a username) for the user u disables the login/password check for all tty:s:
1:2345:respawn:/sbin/getty -a u 38400 tty1
2:23:respawn:/sbin/getty -a u ...
2
votes
1answer
1k views
How to list and filter Samba users that need a password change?
Apparently, I can find out whether a Samba user needs a password change or not with the following command:
pdbedit -v -u userid | grep "Password must change"
I also see I can list all the Samba ...
2
votes
1answer
1k views
How to set a new password from bash?
I'm using busybox with a limited passwd (I don't have --stdin option) and without chpasswd and I need to change the password of an user from bash. Here is my best result:
echo newpassword > ...
2
votes
1answer
568 views
gnome-screensaver-command --lock, hide password
If I lock the screen using gnome-screensaver (gnome-screensaver-command --lock) and enter the password, a big dot is shown instead of each character. Is it possible to change this behaviour such that ...
2
votes
0answers
79 views
Samba passwords expiring in x days - how do we fix them to not expire
We use OpenLDAP and Samba v3. Recently some Samba-defined users (no accounts on the shared linux server) started being listed in logwatch as having their passwords come up to "will expire"...I ...
2
votes
3answers
374 views
Another account with same uid as root gets prompted to set new password for root, not itself
After upgrading the os from 5300-06 to 5300-11, this weird behaviour happened.
My system had another unix account, let's call it "abc", purposely configured its uid to 0 for working as a root with ...
2
votes
0answers
194 views
Validate Password for user account from shell script
Application is for a multiple server standardization script
Looking for a way in a shell script to check if the password for an OS account (AIX) matches a standardized plain text password.
The ...
2
votes
3answers
877 views
Logged on via ssh-key, can I reset my account password?
I am logged in on a server via sshkey (ssh -i /home/me/.ssh/ssh-key me@server).
I got sudo rights on that server from the admin, but I can't exercise them, since I forgot my actual Unix password (or ...
2
votes
3answers
114 views
newgrp asks for password [duplicate]
I don't understand why newgrp prompts me for password when I want to change my group. I don't even know what password it is asking for but certainly not mine (user clime).
$ id
uid=500(clime) ...
1
vote
2answers
11k views
How can we change root password?
If we don't know the root password and don't have root access to the machine, how can we change the root password?
1
vote
1answer
888 views
How to reset Linux root and grub passwords?
If we forget our Linux root password, we can change it by changing grub's boot options.
But in this case, we also set a grub password and forgot both passwords. How can we recover both?
1
vote
4answers
884 views
Change password in headless mode
I am building a script to fully automate a VPS setup, and I need to change the root password. I would like to avoid typing it as the script is running through SSH.
Is there a way to redirect an ...
1
vote
1answer
107 views
Setting the root password vs. sudo -i
Should one always set a root password, or is sudo -i acceptable? Two problems is in reading other posts (maybe junk I realize):
sudo -i eliminates the need for a password. Isn't that a problem for ...
1
vote
3answers
324 views
Ask root for password when using su command
I'm trying to edit /etc/sudoers via visudo, but I don't know how to change the root rights.
I want root to be prompted for the user1's password, when he tries to use su user1.
1
vote
2answers
1k views
Ubuntu password policy
I want to set the system-wide password policy on an Ubuntu 12.04 LTS server. Googling around, a lot of people point to this (very old) document:
...
1
vote
2answers
630 views
How to expire a password? (For inital account creation)
I've often created temporary passwords for users for my own development machine for initial id creation.
For other environments, I've seen admins have the ability to have a password show as expired ...
1
vote
2answers
2k views
How to remove root password on Debian?
I'm running Debian in a virtual machine and for convenience I would like to remove the password on root (since it doesn't really matter what happens to this box). Internet hasn't been too helpful on ...
1
vote
2answers
2k views
I reset my password and now I can login, but without nautilus or program menu
I recently powered on some old notebook with Linux Mint 11 (Katya) installed, and I thought I remembered my user password, but turns out I didn't. So I reset that password using the instructions here.
...
1
vote
1answer
91 views
How to safely put user typed password into a file?
Is there any way to put the password typed by user into a file (either in Unix or in expect).
read -s -p "enter password" input
echo $input > file
Is the above code safe?
I want to use that ...
1
vote
1answer
90 views
Can pwgen output passwords of a certain length?
I'm using the command line tool pwgen to generate passwords because I love the repeatability you get with the sha1 command line flag. To quote the man page:
-H, --sha1=/path/to/file[#seed]
...
1
vote
2answers
136 views
Is it possible for sudo to read password from gnome-keyring or similar
I'm currently using sudo a lot in a bunch of scripts, which is turning into a bit of a hassle, as some scripts does not allow interactive input (e.g., Makefiles).
Instead of disabling sudo passwords ...
1
vote
2answers
273 views
Max password size in AIX 6.1
I found on the AIX documentation some rules to set about passwords length :
minlen Defines the minimum length of a password. The value is a decimal integer string. The default is a value of 0, ...
1
vote
1answer
875 views
SCP and/or SSH command with password in line
First, I'm TRYING to use rsa keys because I'm using the script to create RSA keys, but initially I have to connect to the remote machine to pass over the newly generated authentication key. Having ...
1
vote
1answer
137 views
password problem when feeding a remote file into diff
When I want to compare a local file with a remote file, any of these usually works:
$ ssh remote cat file | diff file -
$ diff file <(ssh remote cat file)
However, sometimes (especially when the ...
1
vote
2answers
125 views
Tracing RHEL system hack
I have an RHEL 5.7 installation in the lab and someone changed the root password (either by linux single or some other mode). I would like to identify how was it done and basically be able to identify ...
1
vote
1answer
120 views
add new language to /usr/share/dict/words
In this directory I have English dict and my language file, but where I can download other language? Or maybe you known other free dictionary? I need to make list of word that are not in the ...
1
vote
1answer
556 views
Can I automate mounting a cifs share without storing my password in plaintext?
I currently use a script which contains commands along the lines of
sudo /sbin/mount.cifs $SERVER_SHARE $MOUNT -o username=$DOMAIN_$USER,uid=$USER,gid=$USER,file_mode=0664,dir_mode=0775
to mount my ...
1
vote
1answer
110 views
How do I keep KDE from asking new users for a password when I use /etc/skel to set up their enviroment?
I made this nice custom KDE setup on Arch Linux with customised settings like desktop background, panel settings, kwin settings, etc. I heard that if you copy all the hidden files from your ...
1
vote
1answer
1k views
Brute force access to a Firebird database?
Ok, so here's the deal. When migrating a certain product with terrible documentation to another database type, my Firebird database was deleted. I then proceeded to recover it from the filesystem ...
1
vote
2answers
719 views
Using rsync in a cronjob when a password is needed
Basically I have a bash script that fetches data from my server to perform a backup.
As it is now I have to start that script manually, enter the password, and then wait for it to finish.
I would ...
1
vote
1answer
559 views
Fedora 15 won't remember wireless password
I just installed Fedora 15 beta with Gnome 3. I've done all the updates.
The networking applet asks for the wireless password every time it connects. I found this bug, which says that the issue is ...
1
vote
0answers
61 views
samba 4 force user
I have a directory with files owned by Linux user quux. I want to give access to it over CIFS using Samba 4 for two persons so they have different usernames foo and bar and passwords but access the ...
1
vote
1answer
142 views
Where does Samba 4 store user passwords?
Where does Samba 4 store user passwords? How can I import my password hashes from Samba 3 in Samba 4?
I am using my own LDAP server with samba 3, and the password hash is stored within the ...
1
vote
1answer
156 views
Rehashing /etc/shadow. Can I force NIS users to change password?
I'm currently migrating a CentOS environment to a Debian one. The users log in over the network using NIS. I was hoping to copy /etc/shadow from my old server to my new one so that we can offer ...
1
vote
0answers
131 views
Make gdm/mdm prompt for an empty password on liveCD
By default Fedora liveCD is configured in a way that liveuser is logged in automatically since following lines added to gdm/mdm (a fork of gdm of GNOME2) configuration file
[daemon]
...
1
vote
0answers
231 views
Getting a short wifi password to work on Linux Mint
Wifi password became a problem to me. My wifi password consists of only 4 letters but my Linux Mint 12 is expecting more than 7 letters - until then connect button is disabled.
Can I work around this ...
1
vote
0answers
476 views
Backupninja + Duplicity problem
I have recently installed on a Debian squeeze_64 server the Backupninja and Duplicity utilities. My goal is to backup /foo/bar/* to /desti/nation/ with full backup once a week and differentially once ...
1
vote
1answer
414 views
How to invoke root privileges from a password prompt of “Software Update” window?
When I try to install software updates using the "Software Update" GUI, I am asked for the root password. Although, I can 'su' in a terminal, the password is not recognized as correct in the GUI ...
1
vote
3answers
583 views
Shell script to become root
How can we write a shell script to become root?
That is I donot want to input the password at prompt it should be within the script itself. I was trying to make but failed to do so.Is it possible, if ...
0
votes
1answer
109 views
run 'service php5-fpm restart' without using sudo
I am integrating my cakephp projects using jenkins.
Right now, I am exploring the use of Phing. There is one task where I need to run
service php5-fpm restart
So far I tried to do this manually. ...
0
votes
1answer
263 views
Difference between passwd and passwd- file [duplicate]
Possible Duplicate:
Who creates /etc/{group,gshadow,passwd,shadow}-?
I have a strange passwd- file in /etc, notice the trailing dash:
root@ubuntu:~# ls /etc/passw*
/etc/passwd ...
0
votes
1answer
166 views
Force users to change email password every six months
I'm going to build an experimental mail server with Postfix + Dovecot and Mysql for user accounts.
The server will offer SMTP + POP3 + IMAP.
Is there a way to force users to change their mail account ...
0
votes
2answers
143 views
Error when I want to create a user on FreeBSD
I'm trying to run FreeBSD (.iso) in a virtual VMWare machine. The useradd command gives me an error:
# useradd pstnc
useradd: Command not found
Why is that? The command is correct and very simple, ...
0
votes
3answers
8k views
How to check that a user/password is expired in AIX?
I can check that the user is expired or not with:
lsuser -f USERNAME | fgrep expires
But how can I check that the user's password is expired or not? Are there any other "expiring" things that can ...
0
votes
0answers
69 views
Rss feed notifications in gnome 3
Is there a way to configure Gnome 3 notifications to display password protected RSS feed? Or maybe it is possible to configure another RSS reader to use gnome 3 notifications? It seems to me an ...
0
votes
1answer
111 views
Jboss application startup and shutdown asks for password. Howto automate with init script?
Jboss application startup and shutdown of BMC-IDM asks for password (called keystore password, some Java stuff).
Howto automate with init script?
Stop application
> stop_idm_suite.sh
Suite ...
